LLVM 万花筒教程 JIT 编译问题

LLVM Kaleidoscope tutorial JIT compilation problem

本文关键字：编译 问题 JIT 教程 万花筒 LLVM      更新时间：2023-10-16

我在万花筒 JIT 章节教程中遇到了一些问题。

我编译：(就像教程页面建议的那样(

clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core mcjit native` -rdynamic -O3 -o toy

/tmp/toy-ce525d.o: In function `llvm::orc::LegacyIRCompileLayer<llvm::orc::LegacyRTDyldObjectLinkingLayer, llvm::orc::SimpleCompiler>::addModule(unsigned long, std::unique_ptr<llvm::Module, std::default_delete<llvm::Module> >)':
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h:93: undefined reference to `llvm::orc::SimpleCompiler::operator()(llvm::Module&)'
/tmp/toy-ce525d.o: In function `llvm::orc::LegacyRTDyldObjectLinkingLayer::ConcreteLinkedObject<std::shared_ptr<llvm::RuntimeDyld::MemoryManager> >::finalize()':
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h:237: undefined reference to `llvm::orc::JITSymbolResolverAdapter::JITSymbolResolverAdapter(llvm::orc::ExecutionSession&, llvm::orc::SymbolResolver&, llvm::orc::MaterializationResponsibility*)'
/tmp/toy-ce525d.o: In function `llvm::orc::JITSymbolResolverAdapter::~JITSymbolResolverAdapter()':
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:93: undefined reference to `vtable for llvm::orc::JITSymbolResolverAdapter'
/tmp/toy-ce525d.o: In function `KaleidoscopeJIT':
/home/user/Desktop/llvm/kaleidoscope/other/././KaleidoscopeJIT.h:45: undefined reference to `llvm::orc::ExecutionSession::ExecutionSession(std::shared_ptr<llvm::orc::SymbolStringPool>)'
/tmp/toy-ce525d.o: In function `llvm::DenseSet<llvm::orc::SymbolStringPtr, llvm::DenseMapInfo<llvm::DenseSet> > llvm::orc::lookupWithLegacyFn<llvm::orc::KaleidoscopeJIT::KaleidoscopeJIT()::{lambda(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)#1}>(llvm::orc::ExecutionSession&, llvm::orc::AsynchronousSymbolQuery&, llvm::DenseMapInfo<llvm::DenseSet> const&, llvm::orc::KaleidoscopeJIT::KaleidoscopeJIT()::{lambda(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)#1})':
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:159: undefined reference to `llvm::orc::ExecutionSession::legacyFailQuery(llvm::orc::AsynchronousSymbolQuery&, llvm::Error)'
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:151: undefined reference to `llvm::orc::AsynchronousSymbolQuery::notifySymbolMetRequiredState(llvm::orc::SymbolStringPtr const&, llvm::JITEvaluatedSymbol)'
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:155: undefined reference to `llvm::orc::ExecutionSession::legacyFailQuery(llvm::orc::AsynchronousSymbolQuery&, llvm::Error)'
/llvm-project/llvm/include/llvm/ExecutionEngine/Orc/Legacy.h:166: undefined reference to `llvm::orc::AsynchronousSymbolQuery::handleComplete()'
/tmp/toy-ce525d.o:(.rodata._ZTVN4llvm3orc22LegacyLookupFnResolverIZNS0_15KaleidoscopeJITC1EvEUlRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE_EE[_ZTVN4llvm3orc22LegacyLookupFnResolverIZNS0_15KaleidoscopeJITC1EvEUlRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE_EE]+0x30): undefined reference to `llvm::orc::SymbolResolver::anchor()'

版本10 中的 LLVM 项目，版本 6 中的 clang++ 。

$ uname -srmpo
Linux 4.15.0-72-generic x86_64 x86_64 GNU/Linux
$ clang++ --version
clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ llvm-config --version
10.0.0git

PradeepKumar在评论中修复了这个问题。

此命令编译代码：

clang++ -g toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core mcjit native orcjit` -rdynamic -O3 -o toy

对于那些使用 cmake 构建说明的人，我只需要在llvm_map_components_to_libnames中添加orcjit：

llvm_map_components_to_libnames(llvm_libs orcjit support core irreader)
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